Fix misspelling of "category" (related to #340) [skip ci]

.github/readme/partials/documentation/plugins.md

@@ -2,9 +2,9 @@
 
 Plugins are features which provide additional content and lets you customize your rendered metrics.
 See their respective documentation for more informations about how to setup them:
-<% { let previous = null; for (const [plugin, {name, categorie}] of Object.entries(plugins).filter(([key, value]) => value).sort(([an, a], [bn, b]) => a.categorie === b.categorie ? an.localeCompare(bn) : 0)) { %>
-<% if (previous !== categorie) { previous = categorie -%>
-* **<%= `${categorie.charAt(0).toLocaleUpperCase()}${categorie.substring(1)}` %>**
+<% { let previous = null; for (const [plugin, {name, category}] of Object.entries(plugins).filter(([key, value]) => value).sort(([an, a], [bn, b]) => a.category === b.category ? an.localeCompare(bn) : 0)) { %>
+<% if (previous !== category) { previous = category -%>
+* **<%= `${category.charAt(0).toLocaleUpperCase()}${category.substring(1)}` %>**
 <% } -%>
   * [<%- name %>](/source/plugins/<%= plugin %>/README.md)<%# -%>
 <% }} %>